Ushering in social entrepreneurship was the milk co-operative trio Tribhuvandas Kishibai Patel, Dr Verghese Kurien and HM Dalaya. Amul was born in response to the exploitation of marginal milk producers by traders and agents. Dalaya’s innovation of making skim milk powder with the world’s first buffalo milk spray-dryer was a technological breakthrough that revolutionised India’s organised dairy industry.